Help with VT50 65 buzzing with light screens.
I've spent many hours reading this site. I know many say they have a bad buzzing and others can only hear it if they are within a couple feet of the set. I took delivery of my first panel last Sunday. While watching hockey, looking at the channel guild,etc. it had a loud buzzing sound, which was very distracting even with my surround sound at a pretty loud volume, and I sit about 17 feet from the set. I called Paul's, they came came out gave a listen, explained that all plasma's buzz, but swapped it out any way on Wednesday. After returning from work later that day, I settled in to test it out and the new one is even worse. I have my set in a tv cabinet so I thought perhaps it was causing some acoustics which in effect amplify the buzzing.
Then I found something interesting. I have a Denon-4310ci receiver which takes signals from a Cox cable hi-def box, Denon blu-ray transport then a single HDMI cable from the receiver to the tv. The Denon has a chip that can upscale 1080i from the cable box to the tv. I can choose 1080p or 1080p24 for the output format. If I choose 1080p24 AND I set the Panasonic to either 48 or 96 on the 1080p24 setting, the buzzing goes away. Mind you if I go and put my ear to the set I do hear a slight hum.
This makes me wonder if there are really two types of buzzing with light screens. The very loud one that almost makes it un-watchable , has a cycle to it where it cycles between loud and soft approximately in 3 second intervals. The hum that I hear when I'm on 24p at close range is constant, and I can't hear it from my seating position.
If I could watch all content at 1080p24 I would just leave it there, but sports and news, etc. are un watchable at that frame rate.
For what it's worth I had a Samsung 950 that was in there before with no buzzing issues so I don't think it is my equipment. As a final test I turned off the cable and receiver and just ran Netflix through the Viera net and it had the cycle buzzing as well.
I love the blu-ray picture and would love to keep it.
Is it possible i just got two lemons?
Finally, I'm no electrical engineer, so can anyone explain why the buzzing would go away if I use 1080p24, with the TV set to 48 or 96 (60 still buzzes)?
Thanks in advance. I couldn't find this specific issue on this forum.